I also am involved with an addict that gets on the defensive when he is asked if he is using. I stopped asking and went with my gut. I can now tell by his eyes, raspiness in this voice and non stop talking. I walked away from this man before and he got clean and sober for almost 2 yrs. He is now using again, and I am walking again. I will never totally leave him, cause I will always be willing to help him go to treatment again. Good luck to you.